DOCSLIB.ORG

Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Ancient Impact and Aqueous Processes at Endeavour Crater, Mars REPORTS 8. H. Lammer et al., Planet. Space Sci. 54, 1445 micro-ropes, which appear not to have a magnetic 21. H. Y. Wei, C. T. Russell, T. L. Zhang, M. K. Dougherty, (2006). reconnection source (21). Icarus 206, 174 (2010). 9. S. Barabash et al., Nature 450, 650 (2007). 13. T. L. Zhang et al., Nature 450, 654 (2007). 22. T. L. Zhang et al., Planet. Space Sci. 54, 1336 10. The bipolar signature in our rotated coordinate system 14. C. T. Russell, O. Vaisberg, in Venus,D.M.Hunten,L.Colin, (2006). is in the BY component here instead of the BZ component, T. M. Donahue, V. I. Moroz, Eds. (Univ. of Arizona Press, 23. S. Barabash et al., Planet. Space Sci. 55, 1772 as it would be in the usual coordinate system used for Tucson, AZ, 1983), pp. 873–940. (2007). a terrestrial magnetotail plasmoid (18). 15. J. L. Phillips, D. L. McComas, Space Sci. Rev. 55, 11. T. L. Zhang et al., Geophys. Res. Lett. 37, L14202 1 (1991). Acknowledgments: The work in China was supported by (2010). 16. A. Fedorov et al., J. Geophys. Res. 116, (A7), A07220 National Natural Science Foundation of China grants 12. An earlier study found a flux rope in the Venus tail, (2011). 41121003 and 41174156. The work at Graz was supported but reconnection was rejected as a possible source 17. V. Angelopoulos et al., Science 321, 931 (2008). by Austrian Science Fund (FWF: I429-N16). The work at UCLA because of the inconsistent orientation of the rope 18. M. B. Moldwin, W. J. Hughes, J. Geophys. Res. 96, (A8), was supported by NASA under research grant NNX10AV29G. axis (19). In our case, the axis is consistent with 14051 (1991). reconnection. Flux ropes that have been seen on the 19. J. A. Slavin et al., Geophys. Res. Lett. 36, L09106 23 November 2011; accepted 8 March 2012 nightside of Venus are much larger than those in the (2009). Published online 5 April 2012; dayside ionosphere (20) and cannot explain these 20. C. T. Russell, R. C. Elphic, Nature 279, 616 (1979). 10.1126/science.1217013 Chester Lake and all the rocks near Greeley Ancient Impact and Aqueous Haven have similar textures. They are brecciated, with dark, relatively smooth angular clasts up to Processes at Endeavour Crater, Mars ~10 cm in size embedded in a brighter, fractured, fine-grained matrix. Some outcrops, notably Chester Lake, show fine-scale lineations in the S. W. Squyres,1* R. E. Arvidson,2 J. F. Bell III,3 F. Calef III,4 B. C. Clark,5 B. A. Cohen,6 7 8 5 9 10 11 matrix and alignment of some clasts (Fig. 2). L. A. Crumpler, P. A. de Souza Jr., W. H. Farrand, R. Gellert, J. Grant, K. E. Herkenhoff, Pancam spectra of the matrix exhibit a gradual J. A. Hurowitz,4 J. R. Johnson,12 B. L. Jolliff,2 A. H. Knoll,13 R. Li,14 S. M. McLennan,15 16 16 4 17 1 3 decrease in reflectance toward 1000 nm. The clasts D. W. Ming, D. W. Mittlefehldt, T. J. Parker, G. Paulsen, M. S. Rice, S. W. Ruff, can show specular reflections, have a relative- C. Schröder,18 A. S. Yen,4 K. Zacny17 ly deep absorption at 934 nm, and have a shallower on June 1, 2012 535-nm absorption than the matrix materials, The rover Opportunity has investigated the rim of Endeavour Crater, a large ancient impact consistent with relatively unoxidized basaltic ma- crater on Mars. Basaltic breccias produced by the impact form the rim deposits, with stratigraphy terial containing low-Ca pyroxene. similar to that observed at similar-sized craters on Earth. Highly localized zinc enrichments in The matrix of Chester Lake is easily abraded. some breccia materials suggest hydrothermal alteration of rim deposits. Gypsum-rich veins cut A portion of Chester Lake dominated by matrix sedimentary rocks adjacent to the crater rim. The gypsum was precipitated from low-temperature was abraded to a depth of ~2.5 mm with the aqueous fluids flowing upward from the ancient materials of the rim, leading temporarily to rover’s Rock Abrasion Tool (RAT). Resistance to potentially habitable conditions and providing some of the waters involved in formation of abrasion is quantified using specific grind energy, the ubiquitous sulfate-rich sandstones of the Meridiani region. the energy required to abrade away a unit volume www.sciencemag.org of rock. The specific grind energy for Chester fter more than 7 years in operation and the sulfate-rich sedimentary rocks explored by Lake was ~1.5 J mm−3. Representative values for 33 km of traversing, the Mars Explora- Opportunity for most of its mission (2, 3). En- weak terrestrial materials are 0.7 to 0.9 J mm−3 A tion Rover Opportunity has reached En- deavour was chosen as a target because the rocks for chalk and 4.8 to 5.3 J mm−3 for gypsum (10). deavour Crater. Endeavour is ~22 km in diameter there record an ancient epoch in martian history, Chester Lake is substantially weaker than all but andformedinNoachian(1) materials that predate and because orbital infrared data show that phyl- 1 of the 14 diverse rocks abraded by Spirit at losilicate minerals are present in portions of the Gusev Crater (11) but is comparable to the crater rim (4). sulfate-rich sandstones at Opportunity’s landing Downloaded from 1Department of Astronomy, Cornell University, Ithaca, NY 12 2 Opportunity arrived at Endeavour Crater on site ( ). 14853, USA. Department of Earth and Planetary Sciences, 5 Washington University, St. Louis, MO 63031, USA. 3School of sol 2681 ( ) of its mission, at a low-lying seg- At Chester Lake, we used the Alpha Particle Earth and Space Exploration, Arizona State University, Tempe, ment of the rim, ~700 m in length, named Cape X-Ray Spectrometer (APXS) to measure the AZ 85287, USA. 4Jet Propulsion Laboratory, California Institute York (Fig. 1). Shoemaker Ridge (6)formsthe elemental composition of both the matrix (after 5 of Technology, Pasadena, CA 91109, USA. Space Science In- spine of Cape York and is the type locality for abrasion by the RAT) and one of the clasts. Mea- stitute, Boulder, CO 80301, USA. 6NASA Marshall Space Flight Center, Huntsville, AL 35812, USA. 7New Mexico Museum of the Noachian materials of the rim, which we call surements were also made of three targets near Natural History & Science, Albuquerque, NM 87104, USA. 8Hu- the Shoemaker formation. Opportunity first ar- Greeley Haven: Transvaal and Boesmanskop man Interface Technology Laboratory, University of Tasmania, rived at Spirit Point, the southern tip of Cape (both matrix) and Komati (a clast). All are similar Launceston TAS 7250, Australia. 9Department of Physics, 10 York, and then traversed northward 851 m before to one another in composition, and all are similar University of Guelph, Guelph, Ontario N1G 2W1, Canada. Cen- 7 ter for Earth and Planetary Studies, Smithsonian Institution, stopping at Greeley Haven ( ) at the northern to the basaltic sand typical of the Meridiani re- Washington, DC 20560, USA. 11U.S. Geological Survey, Astro- end of Cape York to spend the martian winter. gion (Table 1). The major elements (Na, Mg, Al, geology Science Center, Flagstaff, AZ 86001, USA. 12Applied Instruments of Opportunity’s Athena payload Si, Ca, and Fe) are mostly within 10 weight per- Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, 8 9 13 ( , ) were used to investigate materials within cent (wt %) of the basaltic sand composition, and USA. Botanical Museum, Harvard University, Cambridge, MA the Shoemaker formation, including the bedrock all but a few are within 20 wt %. 02138, USA. 14Department of Civil, Environmental, and Geodetic Engineering, Ohio State University, Columbus, OH 43210, USA. outcrop Chester Lake (Fig. 2) near the southern Fe/Mn ratios of the matrix range from 40 to 15Department of Geosciences, State University of New York, Stony end of Shoemaker Ridge, and several bedrock 44, and “Mg numbers” [100 × molar Mg/(Mg + Fe)] Brook, NY 11794, USA. 16Astromaterials Research and Explora- targets near Greeley Haven at the northern end. of all samples range from 41 to 48. These are tion Science (ARES), NASA Johnson Space Center, Houston, TX Although separated by more than half a kilome- within the ranges of basaltic meteorites from 77058, USA. 17Honeybee Robotics & Spacecraft Mechanisms Corporation, Pasadena, CA 91103, USA. 18Universität Bayreuth ter, these outcrops are similar in physical ap- Mars [Fe/Mn ratios, 36 to 45; Mg numbers, 24 und Eberhard Karls Universität, 72076 Tübingen, Germany. pearance and elemental chemistry; we interpret to 68 (fig. S1)] and indicate that any alteration of *To whom correspondence should be addressed. E-mail: them to represent the dominant surface rock type the protolith of these rocks did not substantially [email protected] of Cape York. mobilize Mg, Mn, or Fe. P contents are higher than 570 4 MAY 2012 VOL 336 SCIENCE www.sciencemag.org REPORTS those of basaltic sand, and Cr contents are lower. blocks that extends to the southeast. The ejecta are higher and quite variable. One location has However, these minor elements follow trends block Tisdale was investigated in detail. Tisdale the highest Zn concentration (~6300 mgg−1)of of martian basaltic and lherzolitic meteorites differs texturally and compositionally from all analyses from Mars. The Zn and Ni elemental (fig. S1), which suggests that igneous fraction- Chester Lake and Greeley Haven rocks. Because trends are similar to trends in hydrothermally ation established the major and minor element it was excavated from Odyssey crater, Tisdale may altered rocks around Home Plate in Gusev crater concentrations. represent a deeper unit within the Shoemaker for- (15).
Load more

Recommended publications
  • An Impacting Descent Probe for Europa and the Other Galilean Moons of Jupiter
    An Impacting Descent Probe for Europa and the other Galilean Moons of Jupiter P. Wurz1,*, D. Lasi1, N. Thomas1, D. Piazza1, A. Galli1, M. Jutzi1, S. Barabash2, M. Wieser2, W. Magnes3, H. Lammer3, U. Auster4, L.I. Gurvits5,6, and W. Hajdas7 1) Physikalisches Institut, University of Bern, Bern, Switzerland, 2) Swedish Institute of Space Physics, Kiruna, Sweden, 3) Space Research Institute, Austrian Academy of Sciences, Graz, Austria, 4) Institut f. Geophysik u. Extraterrestrische Physik, Technische Universität, Braunschweig, Germany, 5) Joint Institute for VLBI ERIC, Dwingelo, The Netherlands, 6) Department of Astrodynamics and Space Missions, Delft University of Technology, The Netherlands 7) Paul Scherrer Institute, Villigen, Switzerland. *) Corresponding author, [email protected], Tel.: +41 31 631 44 26, FAX: +41 31 631 44 05 1 Abstract We present a study of an impacting descent probe that increases the science return of spacecraft orbiting or passing an atmosphere-less planetary bodies of the solar system, such as the Galilean moons of Jupiter. The descent probe is a carry-on small spacecraft (< 100 kg), to be deployed by the mother spacecraft, that brings itself onto a collisional trajectory with the targeted planetary body in a simple manner. A possible science payload includes instruments for surface imaging, characterisation of the neutral exosphere, and magnetic field and plasma measurement near the target body down to very low-altitudes (~1 km), during the probe’s fast (~km/s) descent to the surface until impact. The science goals and the concept of operation are discussed with particular reference to Europa, including options for flying through water plumes and after-impact retrieval of very-low altitude science data.
    [Show full text]
  • Dear Secretary Salazar: I Strongly
    Dear Secretary Salazar: I strongly oppose the Bush administration's illegal and illogical regulations under Section 4(d) and Section 7 of the Endangered Species Act, which reduce protections to polar bears and create an exemption for greenhouse gas emissions. I request that you revoke these regulations immediately, within the 60-day window provided by Congress for their removal. The Endangered Species Act has a proven track record of success at reducing all threats to species, and it makes absolutely no sense, scientifically or legally, to exempt greenhouse gas emissions -- the number-one threat to the polar bear -- from this successful system. I urge you to take this critically important step in restoring scientific integrity at the Department of Interior by rescinding both of Bush's illegal regulations reducing protections to polar bears. Sarah Bergman, Tucson, AZ James Shannon, Fairfield Bay, AR Keri Dixon, Tucson, AZ Ben Blanding, Lynnwood, WA Bill Haskins, Sacramento, CA Sher Surratt, Middleburg Hts, OH Kassie Siegel, Joshua Tree, CA Sigrid Schraube, Schoeneck Susan Arnot, San Francisco, CA Stephanie Mitchell, Los Angeles, CA Sarah Taylor, NY, NY Simona Bixler, Apo Ae, AE Stephan Flint, Moscow, ID Steve Fardys, Los Angeles, CA Shelbi Kepler, Temecula, CA Kim Crawford, NJ Mary Trujillo, Alhambra, CA Diane Jarosy, Letchworth Garden City,Herts Shari Carpenter, Fallbrook, CA Sheila Kilpatrick, Virginia Beach, VA Kierã¡N Suckling, Tucson, AZ Steve Atkins, Bath Sharon Fleisher, Huntington Station, NY Hans Morgenstern, Miami, FL Shawn Alma,
    [Show full text]
  • Technology Today Spring 2013
    Spring 2012 TECHNOLOGY® today Southwest Research Institute® San Antonio, Texas Spring 2012 • Volume 33, No. 1 TECHNOLOGY today COVER Director of Communications Craig Witherow Editor Joe Fohn TECHNOLOGY Assistant Editor today Deborah Deffenbaugh D018005-5651 Contributing Editors Tracey Whelan Editorial Assistant Kasey Chenault Design Scott Funk Photography Larry Walther Illustrations Andrew Blanchard, Frank Tapia Circulation Southwest Research Institute San Antonio, Texas Gina Monreal About the cover Full-scale fire tests were performed on upholstered furniture Technology Today (ISSN 1528-431X) is published three times as part of a project to reduce uncertainty in determining the each year and distributed free of charge. The publication cause of fires. discusses some of the more than 1,000 research and develop- ment projects under way at Southwest Research Institute. The materials in Technology Today may be used for educational and informational purposes by the public and the media. Credit to Southwest Research Institute should be given. This authorization does not extend to property rights such as patents. Commercial and promotional use of the contents in Technology Today without the express written consent of Southwest Research Institute is prohibited. The information published in Technology Today does not necessarily reflect the position or policy of Southwest Research Institute or its clients, and no endorsements should be made or inferred. Address correspondence to the editor, Department of Communications, Southwest Research Institute, P.O. Drawer 28510, San Antonio, Texas 78228-0510, or e-mail [email protected]. To be placed on the mailing list or to make address changes, call (210) 522-2257 or fax (210) 522-3547, or visit update.swri.org.
    [Show full text]
  • User Guide to 1:250,000 Scale Lunar Maps
    CORE https://ntrs.nasa.gov/search.jsp?R=19750010068Metadata, citation 2020-03-22T22:26:24+00:00Z and similar papers at core.ac.uk Provided by NASA Technical Reports Server USER GUIDE TO 1:250,000 SCALE LUNAR MAPS (NASA-CF-136753) USE? GJIDE TO l:i>,, :LC h75- lu1+3 SCALE LUNAR YAPS (Lumoalcs Feseclrch Ltu., Ottewa (Ontario) .) 24 p KC 53.25 CSCL ,33 'JIACA~S G3/31 11111 DANNY C, KINSLER Lunar Science Instltute 3303 NASA Road $1 Houston, TX 77058 Telephone: 7131488-5200 Cable Address: LUtiSI USER GUIDE TO 1: 250,000 SCALE LUNAR MAPS GENERAL In 1972 the NASA Lunar Programs Office initiated the Apollo Photographic Data Analysis Program. The principal point of this program was a detailed scientific analysis of the orbital and surface experiments data derived from Apollo missions 15, 16, and 17. One of the requirements of this program was the production of detailed photo base maps at a useable scale. NASA in conjunction with the Defense Mapping Agency (DMA) commenced a mapping program in early 1973 that would lead to the production of the necessary maps based on the need for certain areas. This paper is designed to present in outline form the neces- sary background informatiox or users to become familiar with the program. MAP FORMAT * The scale chosen for the project was 1:250,000 . The re- search being done required a scale that Principal Investigators (PI'S) using orbital photography could use, but would also serve PI'S doing surface photographic investigations. Each map sheet covers an area four degrees north/south by five degrees east/west.
    [Show full text]
  • Etruscan News 19
    Volume 19 Winter 2017 Vulci - A year of excavation New treasures from the Necropolis of Poggio Mengarelli by Carlo Casi InnovativeInnovative TechnologiesTechnologies The inheritance of power: reveal the inscription King’s sceptres and the on the Stele di Vicchio infant princes of Spoleto, by P. Gregory Warden by P. Gregory Warden Umbria The Stele di Vicchio is beginning to by Joachim Weidig and Nicola Bruni reveal its secrets. Now securely identi- fied as a sacred text, it is the third 700 BC: Spoleto was the center of longest after the Liber Linteus and the Top, the “Tomba della Truccatrice,” her cosmetics still in jars at left. an Umbrian kingdom, as suggested by Capua Tile, and the earliest of the three, Bottom, a warrior’s iron and bronze short spear with a coiled handle. the new finds from the Orientalizing securely dated to the end of the 6th cen- necropolis of Piazza d’Armi that was tury BCE. It is also the only one of the It all started in January 2016 when even the heavy stone cap of the chamber partially excavated between 2008 and three with a precise archaeological con- the guards of the park, during the usual cover. The robbers were probably dis- 2011 by the Soprintendenza text, since it was placed in the founda- inspections, noticed a new hole made by turbed during their work by the frequent Archeologia dell’Umbria. The finds tions of the late Archaic temple at the grave robbers the night before. nightly rounds of the armed park guards, were processed and analysed by a team sanctuary of Poggio Colla (Vicchio di Strangely the clandestine excavation but they did have time to violate two of German and Italian researchers that Mugello, Firenze).
    [Show full text]
  • The Noise of Turbulent Boundary-Layer Flow Over Small Steps
    48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition 2010 Orlando, Florida, USA 4-7 January 2010 Volume 1 of 21 ISBN: 978-1-61738-422-6 Printed from e-media with permission by: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 Some format issues inherent in the e-media version may also appear in this print version. The contents of this work are copyrighted and additional reproduction in whole or in part are expressly prohibited without the prior written permission of the Publisher or copyright holder. The resale of the entire proceeding as received from CURRAN is permitted. For reprint permission, please contact AIAA’s Business Manager, Technical Papers. Contact by phone at 703-264-7500; fax at 703-264-7551 or by mail at 1801 Alexander Bell Drive, Reston, VA 20191, USA. TABLE OF CONTENTS VOLUME 1 THE NOISE OF TURBULENT BOUNDARY-LAYER FLOW OVER SMALL STEPS.........................................................................1 M. Ji, M. Wang CHARACTERISTICS OF SEPARATED FLOW SURFACE PRESSURE FLUCTUATIONS ON AN AXISYMMETRIC BUMP...............................................................................................................................................................................18 G. Byun, R. Simpson THE NEAR-FIELD PRESSURE OF A SMALL-SCALE ROTOR DURING HOVER..........................................................................32 J. Stephenson, C. Tinney, J. Sirohi INVESTIGATION OF NEAR-FIELD FLOW UNSTEADINESS AROUND A NACA0012 WINGTIP USING LARGE-EDDY-SIMULATION
    [Show full text]
  • Sha Bulletin 33
    BULLETIN ISSUE 33 SPRING 2020 2 Contents The Bulletin for the Society for the AGM Autumn Conference History of Astronomy Page 4 SHA Officers and Council Honorary President - Allan Chapman Honorary Vice-President – Arnold Wolfandale Honorary Vice-President – Dr Michael Hoskin Chairman – Gerard Gilligan Vice-Chair and Enews Editor – David Sellers Treasurer – Geoff King General Secretary – Laura Carroll Survey Coordinator – Kevin Johnson Publicity Officer – Mike Leggett Membership Secretary – Graham Jones Events Secretary – Michael White Online Editor – John Chuter 33. Well-trodden Paths: Sidney Bertram Gaythorpe Librarian – James Dawson (1880–1964) by David Sellers Archivist – John Chuter Book Review 40. Astro-research 7 by Paul A. Antiquarian Astronomer Editor – Ian Haley Ridpath Page 11 46. Astro Conundrum Quiz Bulletin Co-Editor – Carolyn Kennett number 6 Bulletin Co-Editor – Kevin Kilburn 47. 19th Century Observatories: 1830-39 by Paul Haley 12. Edward Crossley, SEE THE BACK PAGE Bermerside Observatory and FOR THE FULL the Crossley Reflector by DETAILS OF THE Denis Buczynski SPRING CONFERANCE 18. Bunk and Bilge – Harold Spencer Jones and Richard Woolley on Space Travel by Jonathan Spencer Jones 20. Sir James South’s Five-foot Huddart Equatorial by Richard E. Schmidt Pulkovo Observatory - Russia 26. The Nebra sky disc: an alternative interpretation by Kevin Kilburn 55. Astro Conundrum Quiz number 5 with answers 30. Bright Star!—When did Keats write his famous sonnet? ¬by William Sheehan The Society for the History of Astronomy Bulletin Issue 33 Spring 2020 3 Editorial When I offered to take on the role of co-editor of the SHA Bulletin last November, I wasn’t quite sure what I was letting myself in for.
    [Show full text]
  • Sediment and Carbon Accumulation in a Glacial Lake in Chukotka (Arctic Siberia) During the Late Pleistocene and Holocene: Combin
    https://doi.org/10.5194/bg-2021-39 Preprint. Discussion started: 22 February 2021 c Author(s) 2021. CC BY 4.0 License. Sediment and carbon accumulation in a glacial lake in Chukotka (Arctic Siberia) during the late Pleistocene and Holocene: Combining hydroacoustic profiling and down-core analyses Stuart A. Vyse1,2, Ulrike Herzschuh1,2,4, Gregor Pfalz1,2, Lyudmila A. Pestryakova5, Bernhard 5 Diekmann1,2,3,Norbert Nowaczyk6, Boris K. Biskaborn1 1Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A45, 14471 Potsdam, Germany 2Institute of Environmental Science and Geography, University of Potsdam, Potsdam, Germany 3Institute of Geosciences, University of Potsdam, Potsdam, Germany 10 4Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany 5Northeastern Federal University of Yakutsk, Yakutsk, Russia 6Helmholtz-Centre Potsdam GFZ, Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany Correspondence to: Stuart Andrew Vyse ([email protected]); Boris K. Biskaborn ([email protected]) 15 Abstract Lakes act as important sinks for inorganic and organic sediment components. However, investigations of sedimentary carbon budgets within glacial lakes are currently absent from Arctic Siberia. The aim of this paper is 20 to provide the first reconstruction of accumulation rates, sediment and carbon budgets from a lacustrine sediment core from Lake Rauchuagytgyn, Chukotka (Arctic Siberia). We combined multiple sediment-biogeochemical and sedimentological parameters from a radiocarbon-dated 6.5 m sediment core with lake basin hydroacoustic data to derive sediment stratigraphy, sediment volumes, and infill budgets. Our results distinguished three principal sediment and carbon accumulation regimes that could be identified across all measured environmental proxies 25 including Early MIS2 (ca.
    [Show full text]
  • Referierte Publikationen 2020 Refereed Publications 2020
    Max-Planck-Institut fuer Sonnensystemforschung Max Planck Institute for Solar System Research Referierte Publikationen 2020 Refereed Publications 2020 Refereed Publications 2020 (bold: affiliated to MPS) Total: 285 Agaltsov, A., Hohage, T., & Novikov, R. G. (2020). Global uniqueness in a passive inverse problem of heli- oseismology. Inverse Problems, 36(5): 055004. doi:10.1088/1361-6420/ab77d9. Agarwal, J., Kim, Y., Jewitt, D., Mutchler, M., Weaver, H., & Larson, S. (2020). Component properties and mutual orbit of binary main-belt comet 288P/(300163) 2006 VW139. Astronomy and Astrophysics, 643: A152. doi:10.1051/0004-6361/202038195. Ahlborn, F., Bellinger, E. P., Hekker, S., Basu, S., & Angelou, G. C. (2020). Asteroseismic sensitivity to in- ternal rotation along the red-giant branch. Astronomy and Astrophysics, 639: A98. doi:10.1051/0004- 6361/201936947. Ahumada, R., Allende Prieto, C., Almeida, A., Anders, F., Anderson, S. F., Andrews, B. H., Anguiano, B., Arcodia, R., Armengaud, E., Aubert, M., Avila, S., Avila-Reese, V., Badenes, C., Balland, C., Barger, K., Barrera-Ballesteros, J. K., Basu, S., Bautista, J., Beaton, R. L., Beers, T. C., Benavides, B. I. T., Bender, C. F., Bernardi, M., Bershady, M., Beutler, F., Bidin, C. M., Bird, J., Bizyaev, D., Blanc, G. A., Blanton, M. R., Boquien, M., Borissova, J., Bovy, J., Brandt, W. N., Brinkmann, J., Brownstein, J. R., Bundy, K., Bu- reau, M., Burgasser, A., Burtin, E., Cano-Díaz, M., Capasso, R., Cappellari, M., Carrera, R., Chabanier, S., Chaplin, W., Chapman, M., Cherinka, B., Chiappini, C., Choi, P. D., Chojnowski, S. D., Chung, H., Clerc, N., Coffey, D., Comerford, J. M., Comparat, J., da Costa, L., Cousinou, M.-C., Covey, K., Crane, J.
    [Show full text]
  • User Guide To
    USER GUIDE TO 1 2 5 0 , 000 S CA L E L U NA R MA P S DANNY C. KINSLER Lunar Science Institute 3303 NASA Road #1 Houston, TX 77058 Telephone: 713/488-5200 Cable Address: LUNSI The Lunar Science Institute is operated by the Universities Space Research Association under Contract No. NSR 09-051-001 with the National Aeronautics and Space Administration. This document constitutes LSI Contribution No. 206 March 1975 USER GUIDE TO 1 : 250 , 000 SCALE LUNAR MAPS GENERAL In 1 972 the NASA Lunar Programs Office initiated the Apoll o Photographic Data Analysis Program. The principal point of this program was a detail ed scientific analysis of the orbital and surface experiments data derived from Apollo missions 15, 16, and 17 . One of the requirements of this program was the production of detailed photo base maps at a useabl e scale . NASA in conjunction with the Defense Mapping Agency (DMA) commenced a mapping program in early 1973 that would lead to the production of the necessary maps based on the need for certain areas . This paper is desi gned to present in outline form the neces- sary background information for users to become familiar with the program. MAP FORMAT The scale chosen for the project was 1:250,000* . The re- search being done required a scale that Principal Investigators (PI's) using orbital photography could use, but would also serve PI's doing surface photographic investigations. Each map sheet covers an area four degrees north/south by five degrees east/west. The base is compiled from vertical Metric photography from Apollo missions 15, 16, and 17.
    [Show full text]
  • SELMA Mission
    SELMA: How do airless bodies interact with space environment? 1 SELMA mission: How do airless bodies interact 2 with space environment? The Moon as an accessible 3 laboratory 4 5 Yoshifumi Futaana, Stas Barabash, Martin Wieser 6 Swedish Institute of Space Physics, Box 812, Kiruna SE 98128, Sweden. 7 E-mail: [email protected] 8 Peter Wurz 9 University of Bern, Bern, Switzerland 10 Dana Hurley 11 The Johns Hopkins University Applied Physics Laboratory, Laurel, USA 12 Mihaly Horányi 13 Laboratory for Atmospheric and Space Physics, University of Colorado, USA 14 Urs Mall 15 Max Planck Institute for Solar System Research, Göttingen, Germany 16 Nicolas Andre 17 IRAP- Université de Toulouse, CNRS, France 18 Nickolay Ivchenko 19 KTH Royal Institute of Technology, Stockholm, Sweden 20 Jürgen Oberst 21 German Aerospace Center, Berlin, Germany 22 Kurt Retherford 23 Southwest Research Institute, San Antonio, USA 24 Andrew Coates 25 Mullard Space Science Laboratory, University College London, London, UK 26 Adam Masters 27 Imperial College London, London, UK 28 Jan-Erik Wahlund 29 Swedish Institute of Space Physics, Uppsala, Sweden 30 Esa Kallio 31 Aalto University, Helsinki, Finland 32 and the SELMA proposal team. 33 34 Keyword: Moon exploration, volatile, water, mini-magnetosphere, dust, permanently 35 shadowed crater SELMA: How do airless bodies interact with space environment? 36 Abstract: 37 The Moon is an archetypal atmosphere-less celestial body in the Solar System. For such bodies, 38 the environments are characterized by complex interaction among the space plasma, tenuous 39 neutral gas, dust and the outermost layer of the surface. Here we propose the SELMA mission 40 (Surface, Environment, and Lunar Magnetic Anomalies) to study how airless bodies interact with 41 space environment.
    [Show full text]
  • Official 2017 Half Marathon Results Book
    OFFICIAL RESULTS BOOK November 10-12, 2017 2017 Official Race Results 3 Thanks For Your Participation 4 Elite Review 6 Runner Survey 7 Event Demographics 8 Half Marathon Finisher & Divisional Winners - Male 9 Half Marathon Overall Results - Male 18 Half Marathon Finisher & Divisional Winners - Female 19 Half Marathon Overall Results - Female 36 By-the-Bay 3K & Pacific Grove Lighthouse 5K 37 5K Divisional Results - Male & Female 38 5K Overall Results - Male 41 5K Overall Results - Female 45 3K Results (alphabetical) 47 Half Marathon Memories 48 Our Volunteers 49 Our Sponsors & Supporters 50 Our Family of Events 51 2018 Waves to Wine Challenge MONTEREYBAYHALFMARATHON.ORG P.O. Box 222620 Carmel, CA 93922-2620 831.625.6226 [email protected] A Big Sur Marathon Foundation Event Steve Zalan Cover photo by Don Wilcoxson Thanks For Your Participation What a day! We hope you had a great experience at last Novem- Salinas Valley Half Marathon in early August, and the ber’s Monterey Bay Half Marathon, Pacific Grove year-round, award-winning JUST RUN youth fitness Lighthouse 5K, or By-the-Bay 3K. The clear, sunny, program. The event weekend you participated in was and calm conditions were conducive to great perfor- managed by our 85+ member-strong event commit- mances along the rocky shores of Monterey Bay and tee who coordinates the efforts of more than 1,500 Pacific Grove. The new Ocean View Challenge, reward- volunteers throughout race weekend. These groups ing those who raced both Saturday’s 5K and Sunday’s and organizations are listed on page ____. This race half, helped the shorter race attract a record field of also would not be possible without the support of almost 1,500 entrants to Pacific Grove.
    [Show full text]